Openings ~ these consist of a head, jambs and sill. Different
methods can be used in their formation, all with the primary
objective of adequate support around the void. Details relate to
older/existing construction and where thermal insulation is not
critical. Application limited † see pages 488 and 489.Typical Head Details ~Ref. BS EN 845-2: Specification for ancillary components for
masonry. Lintels.Opening Details---Heads